Jay-Z and Beyonce took great pains to keep their relationship private, rarely being seen together and not commenting to the press. The power couple was married in New York City on April 4, 2008.
Ben Affleck and his "Daredevil" co-star Jennifer Garner began dating in 2004. Ben proposed to Jennifer on her 33rd birthday and they've been married since June 29, 2005.
Gwyneth Paltrow, who's dated Brad Pitt and Ben Affleck among others, married Coldplay lead singer Chris Martin on Dec. 5, 2003, and the couple have two children together.
Since 2004, Ellen DeGeneres has had a relationship with "Arrested Development" actress Portia de Rossi. They were married on Aug. 16, 2008, at their home in Beverly Hills.
Will Smith and Jada Pinkett-Smith met in 1990 when Jada auditioned for a role on "The Fresh Prince of Bel-Air." Although she didn't get the role, the pair became friends and started dating five years later. The couple was married on Dec. 31, 1997.
Annette Bening and Warren Beatty began a relationship during the filming of the 1991 movie "Bugsy." They married on March 10, 1992, and have four children.
After reports of an engagement between pop diva Mariah Carey and actor Nick Cannon surfaced in 2008, the two married in an impromptu ceremony at her Bahamian estate on April 30, 2008.
Megan Fox met "Beverly Hills, 90210" star Brian Austin Green in 2004 on the set of "Hope & Faith." They were involved in an on-again, off-again relationship, before marrying in June 2010.
Oscar-winners Michael Douglas and Catherine Zeta-Jones got engaged in Aspen, Colo., on New Year's Eve in 1999. The couple married in November 2000.
Brad Pitt, who was married to Jennifer Aniston at the time, met Angelina Jolie on the set of "Mr. and Mrs. Smith" in 2005. Though rumors of the two being a couple began flying, the couple didn't confirm their relationship until January 2006.
Kevin Bacon has been married to "The Closer" actress Kyra Sedgwick since Sept. 4, 1988. The two met on the set of the PBS version of Lanford Wilson's play "Lemon Sky" and have appeared in four movies together.
Harrison Ford, who also has two previous marriages, married actress Calista Flockhart on June 15, 2010, in Santa Fe, N.M., where Ford was filming "Cowboys and Aliens." The couple began dating after meeting at the 2002 Golden Globes.
John Travolta and Kelly Preston first met in 1987 while filming "The Experts." The pair got married in 1991 ... twice actually, once in Paris and once in Florida after their initial Paris marriage was ruled not valid.
Melanie Griffith and Antonio Banderas met while filming the 1995 comedy "Too Much." Each married to somebody else at the time, they each got divorced and then married each other in a private London ceremony on May 14, 1996.
In 1988, Tom Hanks married actress Rita Wilson. The two first met on the set of Hanks' TV show "Bosom Buddies" but later developed a romantic interest while working on the film "Volunteers."
Country singers Tim McGraw and Faith Till toured together in 1996 and Hill soon broke off an engagement so that the two could start dating each other. The couple then married on Oct. 6, 1996.
Model/actress Rebecca Romijn and Jerry O'Connell, best known for his childhood "Stand By Me" role, married on their ranch in Southern California on July 14, 2007.
Nicole Kidman, who'd previously been married to Tom Cruise for 11 years, met country singer Keith Urban, at G'Day LA, an event honoring Australians, in January 2005. They married on June 25, 2006, in Sydney, Australia.
Soccer star David Beckham started dating Victoria Adams, famously known as Posh Spice from The Spice Girls, after she attended a Manchester United match in 1997. The two married on July 4, 1999, at Luttrellstown Castle in Ireland.
Daniel Craig, the current James Bond, had been friends with actress Rachel Weisz for many years before the two filmed the thriller "Dream House." The pair began dating in December 2010 and were married on June 22, 2011.
Real life copied fiction for the stars of HBO's vampire drama "True Blood." Anna Paquin and Stephen Moyer began dating after filming the show's pilot in 2007 and got married on Aug. 21, 2010.
"Twilight" co-stars Robert Pattinson and Kristen Stewart have endured a bumpy 2012 that included Stewart cheating on Pattinson with her much older director, but the two claim to have survived the turmoil.
Javier Bardem began dating Penelope Cruz, his "Vicky Cristina Barcelona" co-star, in 2007, although the couple has maintained a low public profile. According to The Associated Press, the two were married in July 2010 in the Bahamas.
New England Patriots quarterback Tom Brady and Brazilian supermodel Gisele Bundchen married on Feb. 26, 2009, in an small ceremony in Santa Monica, Calif.
After less than a year of dating, Ryan Reynolds and Blake Lively tied the knot in an intimate ceremony Sept. 9, 2012, at Boone Hall Plantation in Mount Pleasant, S.C., just outside of Charleston.
After dating for several years, Jessica Biel and Justin Timberlake got engaged in December 2011 and were married in an Oct. 19, 2012, ceremony held in southern Italy.
Actress Carey Mulligan married Mumford & Sons front man Marcus Mumford in a super-secret ceremony in a barn on a working farm in Somerset, England, on April 21, 2012.